What’s Vulnerable › Vulnerabilities

CVE-2016-9555

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 10.0% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2016-11-28 · updated 2026-06-17
• Weakness: CWE-125

Description

The sctp_sf_ootb function in net/sctp/sm_statefuns.c in the Linux kernel before 4.8.8 lacks chunk-length checking for the first chunk, which allows remote attackers to cause a denial of service (out-of-bounds slab access) or possibly have unspecified other impact via crafted SCTP data.

Affected products

• Linux kernel: from 3.2 before 3.2.85; from 3.3 before 3.10.105; from 3.11 before 3.12.68; from 3.13 before 3.16.40; from 3.17 before 3.18.49; from 3.19 before 4.4.32 — fixed in 3.10.105, 3.12.68, 3.16.40, 3.18.49, 3.2.85, 4.4.32

How to fix

Upgrade to a fixed version: Linux kernel 3.10.105, 3.12.68, 3.16.40, 3.18.49. Check the vendor advisory for mitigations.

References

• http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=bf911e985d6bbaa328c20c3e05f4eb03de11fdd6
• http://lists.opensuse.org/opensuse-security-announce/2016-12/msg00044.html
• http://lists.opensuse.org/opensuse-security-announce/2016-12/msg00054.html
• http://lists.opensuse.org/opensuse-security-announce/2016-12/msg00055.html
• http://lists.opensuse.org/opensuse-security-announce/2016-12/msg00056.html
• http://lists.opensuse.org/opensuse-security-announce/2016-12/msg00067.html
• http://lists.opensuse.org/opensuse-security-announce/2016-12/msg00070.html
• http://lists.opensuse.org/opensuse-security-announce/2016-12/msg00073.html
• http://lists.opensuse.org/opensuse-security-announce/2016-12/msg00076.html
• http://lists.opensuse.org/opensuse-security-announce/2016-12/msg00077.html
• http://lists.opensuse.org/opensuse-security-announce/2016-12/msg00087.html
• http://rhn.redhat.com/errata/RHSA-2017-0086.html

Get alerted when CVE-2016-9555 or the next vulnerability affects your stack